// 导入模块
const t2 = require("./t2");
const {f1,f2,f3} = require("./t3");
let a = 1;

function func1(){

}
class MyClass{}

console.log("hello,js");
t2.func1();
console.log(t2.a);

f1();
f2();
f3();
// f4();